Air conditioner host and equipment platform thereof

Abstract

The utility model relates to the technical field of green energy conservation, and discloses an air conditioner host and an equipment platform thereof. An air outlet of the air conditioner host is formed in the third back plate of the air exhaust cavity in the different direction and / or on the different side of the main air inlet of the air inlet cavity of the shell, or the air outlet of the air exhaust cavity is formed in the second back plate of the air exhaust cavity opposite to the air inlet of the air exhaust cavity; the direction of an air suction opening of the fan and the main air outlet direction of the external heat exchanger are orthogonally arranged or approximately orthogonally arranged, so that an airflow volute chamber between an air outlet of the external heat exchanger and the air suction opening of the fan in the negative pressure cavity is constructed; the compressor cavity and the exhaust cavity are arranged on the outer side of the same side plate of the negative pressure cavity side by side. By constructing an airflow volute chamber between an air outlet of the heat exchanger and an air suction opening of the fan, the thickness of the main unit is further reduced, a structure-intensive wall-attached air conditioner main unit can be manufactured, and structural fusion, air path fusion and energy coupling of the air conditioner main unit and the outer vertical face of the equipment platform are promoted.

Description

Technical Field

[0001] This utility model relates to the field of green energy-saving technology, and in particular to an air conditioning unit and its equipment platform. Background Technology

[0002] like Figure 1-2 As shown, existing patents such as the one for a vertically arranged air conditioning unit and its equipment platform (application number 202310972409.9) and the one for a sawtooth-shaped finned tube heat exchanger assembly and its air conditioning unit and equipment platform (application number 202311012468.8) creatively propose the technical concept of air conditioning unit coupling and energy coupling with the external facade decoration structure. They employ explicit external heat exchanger inlet and outlet duct technology with the air conditioning unit built-in, and a finned tube external heat exchanger fin planer to perform tiered planing and low-speed air distribution technology on the inlet airflow. This fundamentally restructures the internal structure of the air conditioning unit and the structural relationship between the air conditioning unit and the external facade of the equipment platform, exhibiting outstanding substantive features and significant progress.

[0003] The aforementioned prior art adopts an aerodynamic layout with medium-speed air intake on the upper middle part of the short side of the air conditioning unit and high-speed air exhaust at the bottom, incorporating the main sections of the air intake and exhaust channels of the finned tube heat exchanger assembly into the interior of the air conditioning unit. This utility model uses the horizontal V-shaped finned tube heat exchanger as the basic unit of the finned tube heat exchanger assembly of the air conditioning unit. Within the limited space of the air conditioning unit, the horizontal V-shaped finned tube heat exchanger is continuously arranged parallel to the air intake surface of the air conditioning unit. It unfolds along the air intake surface of the horizontal V-shaped finned tube heat exchanger to obtain a large area of ​​ventilation surface for the finned tube heat exchanger assembly. It then unfolds again on the ventilation surface of the large area of ​​the finned tube heat exchanger assembly to obtain a huge area of ​​finned heat transfer surface.

[0004] The external airflow of this utility model air conditioning unit enters the unit at a medium speed of about 4m / s. Inside the unit, the airflow is continuously and progressively planed by multiple fin cutters, slowing down and dispersing the main airflow. It then passes through the finned tube heat exchanger assembly, which has a large total ventilation surface and a huge total heat exchange area, at low speed and with low resistance for heat exchange. After heat exchange, the airflow flows into the negative pressure chamber of the heat exchanger assembly and converges towards the fan inlet under the negative pressure of the fan. After being accelerated and pressurized by the fan, the airflow enters the vertical (or lateral) exhaust chamber and is finally discharged at a high speed of about 7m / s from the bottom (or side) horizontal exhaust chamber, where it is diffused and diluted into the ambient atmosphere.

[0005] This utility model effectively constructs a high-efficiency heat exchange airflow structure for the finned tube heat exchanger assembly of the air conditioning unit, improves the volumetric energy density of the air conditioning unit, enhances the lateral energy line density of the equipment platform, and promotes the structural coupling, airflow coupling, and energy coupling between the air conditioning unit and the exterior of the equipment platform.

[0006] Following the aforementioned group of utility models, during the ongoing research and development of airflow coupling and energy coupling technology between the air conditioning unit and the exterior decorative structure, the built-in technology for making the inlet and outlet air ducts of the external heat exchanger visible, and the technology for using a fin planer to perform tiered planing of the inlet airflow and low-speed air distribution in the zigzag-shaped finned tube external heat exchanger assembly, the patent application for an air conditioning unit and its equipment platform with an exhaust air bag (application number 202410858895.6) further optimized the "exhaust air bag" technology. Its key innovations are:

[0007] The air conditioning unit is equipped with an exhaust chamber and a fan. The exhaust port of the exhaust chamber is connected to an exhaust section, and the exhaust chamber and the exhaust section constitute an exhaust air bag. The exhaust section is a narrowing exhaust section with a gradually decreasing cross-sectional area, so that the cross-sectional area of ​​the collected airflow in the exhaust chamber is significantly larger than the cross-sectional area of ​​the exhaust port of the exhaust chamber. Further, the first exhaust port of the exhaust section is a wedge-shaped exhaust port. The wedge-shaped exhaust port is a vertical strip exhaust port or a horizontal strip exhaust port. Further, the first exhaust port of the exhaust section is set at an angle away from the air conditioning unit where the exhaust air bag is set. Further, the exhaust port of the exhaust chamber is equipped with a perforated plate for throttling the exhaust airflow. Preferably, the perforated plate is a metal wire mesh.

[0008] The aforementioned air conditioning unit technology using exhaust airbags is an extension and innovation of three major technologies: "airflow coupling and energy coupling technology, visible built-in inlet and outlet air duct technology, and fin planer-stepped airflow deceleration and distribution." Its outstanding substantive features and significant technological advancements are: providing space for exhaust airflow deceleration, pressure boosting, noise reduction, and reorganization; optimizing the structure of the air conditioning unit; and creating conditions for integrating the airflow structure of the air conditioning unit into the equipment platform louvers.

[0009] However, in promoting the application of the above three technologies, there are still some important process and technical issues.

[0010] For example, the air conditioning unit itself becomes larger: the aforementioned patents all change the traditional external heat exchanger airflow routing of the air conditioning unit from being located outside the unit to being located inside the unit, eliminating the air inlet ducts reserved on both sides and the rear of the traditional air conditioning unit on the equipment platform. This effectively solves the structural coupling, airflow coupling, and energy coupling problems between the external heat exchanger and the exterior decorative structure of the equipment platform. Overall, the aforementioned patents have improved the operating efficiency of the external heat exchanger airflow. From the perspective of the actual space occupied by the "air conditioning unit + air inlet and outlet ducts", the aforementioned patents have indeed reduced the floor space of the air conditioning unit. However, after the air inlet and outlet routing of the air conditioning unit is changed from the traditional external to the internal, the visual effect of the structure and size of the new air conditioning unit becomes "very large". The root causes are mainly twofold: First, the change from the "hidden" structure of the external heat exchanger's air duct to the "visible" structure of the new machine body has resulted in an increase in the main unit's structure and size. Second, in order to prevent the built-in external heat exchanger's air duct from having high airflow velocity, increased resistance, and increased fan energy consumption, air conditioning system designers and structural designers have chosen to minimize or even maximize the cross-sectional area of ​​the built-in air duct. This has further led to the "large" amount of internal space occupied by the built-in external heat exchanger's inlet and outlet air ducts.

[0011] In the existing technology of an air conditioning unit and its equipment platform with the fan arranged vertically (application number 202310972409.9), the total volume of the air inlet duct before the external heat exchanger, the vertical exhaust duct after the external heat exchanger, and the horizontal exhaust duct of the air conditioning unit is even greater than the volume of the air conditioning unit body with the traditional external air inlet and exhaust ducts.

[0012] How to significantly reduce the structure and volume of the air conditioning unit's built-in external heat exchanger's inlet and outlet air ducts while maintaining the advantages of the visible built-in external heat exchanger's inlet and outlet air duct technology and the characteristics of the deceleration and air distribution technology of the zigzag external heat exchanger fin planer's stepped planing of the inlet airflow in the form of a zigzag external heat exchanger fin planer, in the practice of promoting the coupling of the external heat exchanger's facade structure, airflow path, and energy in the air conditioning unit is a major and complex task. Utility Model Content

[0013] To solve the aforementioned problems in the prior art, this utility model provides an air conditioning unit.

[0014] Another objective of this invention is to provide a device platform.

[0015] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0016] An air conditioning unit includes a housing, a negative pressure chamber, an exhaust chamber, a compressor chamber, an external heat exchanger, and a fan;

[0017] The compressor chamber and the exhaust chamber are arranged side by side on the outside of the same side plate of the negative pressure chamber;

[0018] The direction of the air inlet of the fan is orthogonal or nearly orthogonal to the main air outlet of the external heat exchanger, thus creating an airflow vortex chamber between the air outlet of the external heat exchanger and the air inlet of the fan in the negative pressure chamber.

[0019] Preferably, the exhaust port of the exhaust chamber is located on the third back plate of the exhaust chamber, which is opposite in direction and / or on the opposite side of the main air inlet of the air inlet chamber of the housing.

[0020] The air outlet of the fan in the exhaust chamber is directly opposite the exhaust port of the exhaust chamber; the exhaust port of the exhaust chamber is a vertical strip-shaped exhaust port.

[0021] Preferably, the exhaust port of the exhaust chamber is located on the second back plate of the exhaust chamber opposite to the air inlet of the exhaust chamber, and a small-area exhaust port is provided; preferably, the small-area exhaust port is located at the bottom of the second back plate, and the small-area exhaust port is a horizontal strip exhaust port; preferably, the small-area exhaust port is located in the upper middle part of the second back plate, and the small-area exhaust port is a rectangular or diamond-shaped exhaust port; preferably, the small-area exhaust port is located in the horizontal middle part of the second back plate, and the small-area exhaust port is a vertical strip exhaust port.

[0022] The small area indicates that the area of ​​the exhaust vent is 10% to 30% of the area of ​​the second back panel.

[0023] Preferably, the opposite orientation is configured such that the exhaust port and the air inlet face different directions, for example, the air inlet is located on the long side of the housing and the exhaust port is located on the short side of the housing.

[0024] The opposite sides are configured such that the exhaust port and the air inlet face the same direction, for example, both the exhaust port and the air inlet are located on the short side of the housing.

[0025] Furthermore, the fan is a backward centrifugal fan; the area of ​​the exhaust surface on the outer periphery of the fan impeller is 2 to 8 times the area of ​​the fan's intake port.

[0026] Furthermore, the external heat exchanger is disposed in the air inlet cavity of the shell.

[0027] Furthermore, the external heat exchanger consists of heat exchange tubes and metal fins sleeved on the heat exchange tubes; the heat exchange tubes are heat exchange pipelines that carry refrigerant transport and heat exchange, and are selected from any one of copper tubes, aluminum tubes, iron tubes, titanium tubes, stainless steel tubes, and alloy tubes.

[0028] The structure of the external heat exchanger includes an I-type finned tube heat exchanger, an L-type finned tube heat exchanger, and M-type, N-type, and V-type finned tube heat exchangers composed of I-type finned tube heat exchangers.

[0029] Furthermore, the heat exchange tube type I finned tube heat exchanger is disposed in the air inlet cavity of the shell and forms a certain angle α with the main air inlet surface of the air inlet cavity of the shell.

[0030] Preferably, the included angle α is an acute angle.

[0031] More preferably, the included angle α is 15°-70°.

[0032] Preferably, there are 2-6 backward centrifugal fans, with each backward centrifugal fan arranged in the same row in the exhaust chamber.

[0033] Furthermore, the heat exchange tube V-shaped finned tube heat exchanger is an asymmetric heat exchange tube V-shaped finned tube heat exchanger with unequal lengths on both sides, consisting of two heat exchange tube I-shaped finned tube heat exchangers of different lengths.

[0034] Among them, the long heat exchange tube I-shaped finned tube heat exchanger is close to the outer side plate of the shell; the short heat exchange tube I-shaped finned tube heat exchanger is close to the first side plate of the exhaust cavity.

[0035] Furthermore, the air inlet cavity of the shell is also provided with an air supply strip; the air supply strip is located on the outer side plate of the shell near the long heat exchange tube I-shaped finned tube heat exchanger.

[0036] Furthermore, the air intake and air guide panel of the fan are wedged into the negative pressure chamber, and part of the space of the compressor chamber is wedged into the negative pressure chamber.

[0037] Furthermore, the inner side of the front panel of the main air inlet is provided with multiple guide vanes perpendicular to the front panel to distribute air to the external heat exchanger in segments.

[0038] Preferably, the fan includes an impeller support, an impeller, and an impeller rear cover. The impeller support is connected to the impeller through the impeller rear cover and installed at the air inlet of the exhaust chamber. The axial air inlet surface of the fan overlaps with the air inlet of the exhaust chamber, and the radial air exhaust surface of the fan is disposed in the exhaust chamber. The area of ​​the radial air exhaust surface of the fan is larger than the area of ​​the axial air inlet surface.

[0039] Preferably, the compressor cavity is equipped with a refrigerant circuit assembly including a compressor, a gas-liquid separator, an expansion valve, and an electrical box.

[0040] Preferably, the negative pressure chamber is a cavity with a unidirectional or multidirectional air inlet, and is composed of a side plate, a top plate, and a bottom plate, including the shell.

[0041] An equipment platform, wherein the equipment platform is equipped with the aforementioned air conditioning unit.

[0042] Furthermore, the exterior facade of the equipment platform is provided with a vertical strip-shaped exhaust vent on at least one side, and the exterior facade is also provided with a main decorative structure; the vertical strip-shaped exhaust vent on the third back plate of the exhaust cavity points to the vertical strip-shaped exhaust vent on one side of the exterior facade.

[0043] Furthermore, the vertical strip exhaust vent of the equipment platform includes a metal mesh and / or a group of metal columns;

[0044] The main decorative structure of the exterior facade of the equipment platform includes metal column groups, louvers, and / or ventilation structures with garden gates, classical entrance doors, and landscape painting designs, as well as ventilation structures with narrow strip decorative panels staggered front and back to leave longitudinal gaps between the panels.

[0045] Furthermore, a small rectangular, rhomboid, or vertical strip-shaped exhaust vent is provided in the middle or lower part of the outer facade of the equipment platform, and a main decorative structure is also provided in the outer facade; the small rectangular, rhomboid, or vertical strip-shaped exhaust vent on the second back plate of the exhaust cavity faces the small rectangular, rhomboid, or vertical strip-shaped exhaust vent in the middle or lower part of the outer facade.

[0046] Furthermore, the small-area exhaust vents on the facade include metal mesh, metal column groups, and / or perforated structural patterns;

[0047] The main decorative structure includes metal column groups, louvers and / or ventilation structures with garden gates, classical entrance doors, and landscape painting designs, as well as ventilation structures with narrow strip decorative panels staggered front and back to leave longitudinal gaps between the panels.

[0048] Furthermore, a horizontal strip-shaped exhaust vent is provided at the bottom of the outer facade of the equipment platform, and a main decorative structure is also provided on the outer facade; the exhaust vent on the second back plate of the exhaust cavity faces the horizontal strip-shaped exhaust vent at the bottom of the outer facade.

[0049] Furthermore, the horizontal strip-shaped exhaust vents on the facade include metal mesh and / or metal column groups;

[0050] The main decorative structure includes metal column groups, louvers and / or ventilation structures with garden gates, classical entrance doors, and landscape painting designs, as well as ventilation structures with narrow strip decorative panels staggered front and back to leave longitudinal gaps between the panels.

[0051] Compared with the prior art, the beneficial effects of this utility model's technical solution are:

[0052] ①Structurally integrated air conditioning unit

[0053] This invention retains the advantages of built-in external heat exchanger duct technology and the characteristics of deceleration and air distribution technology of fin planer cutting the airflow in stages. It constructs an airflow vortex between the heat exchanger outlet and the fan inlet by orthogonally aligning the air intake direction of the air conditioner fan with the air outlet direction of the heat exchanger. This airflow vortex is then transformed into a structural and functional conversion zone on the external heat exchanger duct, becoming a spatial cavity for buffering, adjusting, homogenizing, and reorganizing the airflow at the external heat exchanger outlet.

[0054] This utility model also eliminates the vertical exhaust cavity of the air conditioning unit in the background art by setting up an airflow vortex chamber and adjusting the spatial relationship between the air inlet cavity, negative pressure cavity and exhaust cavity, thereby reducing the longitudinal depth of the air conditioning unit. It can be installed on the wall of the equipment platform or suspended on the wall.

[0055] This invention also significantly reduces or even eliminates the longitudinal exhaust cavity outside the fan by rear-mounting and side-by-side the compressor cavity and centrifugal fan cavity, thereby significantly reducing the size, structure and volume of the air conditioning unit.

[0056] ② High-level protection for external heat exchangers

[0057] Traditional air conditioning units, due to their multi-faceted and large-area air intake, make it difficult to install effective finned tube safety protection devices. As a result, finned tube heat exchangers often collapse due to external force and experience regional heat exchange function degradation.

[0058] This utility model of a coupled air conditioning unit sets the finned tube external heat exchanger inside the heat exchanger shell. The shell provides a high level of protection for the finned tube heat exchanger, preventing fin collapse and regional heat exchange function attenuation.

[0059] This utility model aims to overcome the problem that traditional air conditioning units are difficult to install air intake filtration devices due to multi-faceted and large-area air intake. It adopts a highly centralized and unified external heat exchanger air intake, which allows for the centralized installation of filters at the air intake to intercept mosquitoes and suspended matter, and facilitates filter cleaning.

[0060] ③ Promote the structural coupling, airflow coupling, and energy coupling between the air conditioning unit and the building facade.

[0061] This utility model greatly reduces the structure and volume of the air inlet and outlet ducts of the external heat exchanger built into the air conditioning unit, fully develops the space resources of the equipment platform itself, promotes large-area low-speed air intake on the exterior of the equipment platform, and promotes the integration of the air intake duct space and the free operation and maintenance space of the equipment platform.

[0062] This utility model features a compact air conditioning unit with the fan intake and heat exchanger outlet orthogonally arranged. It is suitable not only for residential buildings but also for installation on the balcony sidewalls of school dormitories, company dormitories, and Loft apartments. During operation, the air conditioning unit directs the exhaust airflow along the balcony sidewall towards the ambient atmosphere, which is beneficial for the structural coupling, airflow coupling, and energy coupling between the air conditioning unit and the exterior facade of residential and apartment buildings.

[0063] ④ The air conditioning system achieves high energy efficiency

[0064] This invention adjusts the local resistance of airflow in various areas of the heat exchanger outlet section by adjusting the inlet cross-sectional size, finned tube angle, and airflow inlet and outlet fin gap angle, thereby balancing the total resistance and achieving uniform ventilation and heat exchange in the finned tube heat exchanger.

[0065] This utility model of air conditioning unit uses a backward centrifugal fan to efficiently connect the air path of the external heat exchanger in the equipment platform scenario. It solves the problems of traditional side-discharge air conditioning units where the air outlet is obstructed by the external facade decoration structure of the equipment platform, the exhaust static pressure increases, the air volume decreases, and some of the reduced air volume is short-circuited by airflow recirculation, which leads to serious deterioration of air conditioning performance. It enables the actual field performance of the air conditioning system to reach the level of laboratory data, and the function of the air conditioning system as a "heat transporter" is fully realized.

[0066] This invention promotes the structural integration, airflow integration, and energy coupling of the air conditioning unit and the equipment platform facade. Attached Figure Description

[0067] To more clearly illustrate the technical solution of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0068] Figure 1 This is a schematic diagram of the structure of an air conditioning unit with a vertically arranged fan, which is part of the background technology.

[0069] Figure 2 This is a schematic diagram of the structure of an air conditioning unit with an exhaust air bag in the background art;

[0070] Figure 3 This is a schematic diagram of the impeller of the backward-curved external rotor centrifugal fan in Example 1;

[0071] Figure 4 This is a schematic diagram of the structure of the backward-facing external rotor centrifugal fan module in Embodiment 1;

[0072] Figure 5This is a three-dimensional view of the compact air conditioning unit in Embodiment 1, where the direction of the fan intake is orthogonal to the direction of the heat exchanger outlet.

[0073] Figure 6 This is a three-dimensional perspective view of the compact air conditioning unit with the fan intake direction and the heat exchanger outlet direction orthogonal, as described in Example 1.

[0074] Figure 7 This is a vertical sectional view of the compact air conditioning unit in Embodiment 1, where the direction of the fan intake is orthogonal to the direction of the heat exchanger outlet.

[0075] Figure 8 This is a top view of the compact air conditioning unit structure in Embodiment 1, where the fan intake and heat exchanger outlet are orthogonally arranged.

[0076] Figure 9 This is a top view of the airflow operation of the air conditioning unit with the fan intake and heat exchanger outlet orthogonally arranged in Example 1;

[0077] Figure 10 This is a partially enlarged view of the airflow operation characteristics of the finned tube heat exchanger in Example 1;

[0078] Figure 11 This is a top view of the airflow operation of the compact air conditioning unit with the air supply strip structure in Embodiment 2;

[0079] Figure 12 This is a top view of the air conditioning unit structure in Embodiment 3, where multiple guide vanes perpendicular to the front panel are installed on the inner side of the front panel of the air conditioning unit to transform the front panel into a low-speed air intake surface of the air conditioning unit.

[0080] Figure 13 Example 3 shows a top view of the air conditioning unit's airflow operation, in which multiple guide vanes perpendicular to the front panel are installed on the inner side of the front panel, transforming the front panel into a low-speed air intake surface for the air conditioning unit.

[0081] Figure 14 This is a top view of the compact air conditioning unit structure with an asymmetrical design, as described in Example 4.

[0082] Figure 15 This is a top view of the airflow operation of the asymmetric design-integrated air conditioning unit in Example 4;

[0083] Figure 16 This is a top view of the air conditioning unit structure in Embodiment 5, where the heat exchanger outlet direction is orthogonal to the fan inlet direction and the exhaust outlet is a low-position strip exhaust outlet.

[0084] Figure 17 This is a vertical sectional view of the air conditioning unit structure in Embodiment 5, where the heat exchanger outlet direction is orthogonal to the fan inlet direction and the exhaust outlet is a low-position strip exhaust outlet.

[0085] Figure 18 This is a top view of the airflow of the air conditioning unit in Embodiment 5, where the heat exchanger outlet direction is orthogonal to the fan inlet direction and the exhaust outlet is a low-position strip exhaust outlet.

[0086] Figure 19 This is a front view of the airflow of the air conditioning unit in Example 5, where the heat exchanger outlet direction is orthogonal to the fan inlet direction and the exhaust outlet is a low-position strip exhaust outlet.

[0087] Figure 20 This is a schematic diagram of the equipment platform for the three-chamber household-coupled central air conditioning unit used in Embodiment 6;

[0088] Figure 21 This is a top view of the airflow operation of the equipment platform of the three-chamber household-coupled central air conditioning unit in Example 6. Detailed Implementation

[0089] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this application. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the described embodiments without creative effort are within the scope of protection of this application.

[0090] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0091] Example 1

[0092] like Figure 3-10 As shown, this embodiment discloses an air conditioning unit, including a housing 1, a negative pressure chamber 2, an exhaust chamber 3, a compressor chamber 4, an external heat exchanger 5, and a fan 6;

[0093] The compressor chamber 4 and the exhaust chamber 3 are arranged side by side on the outside of the same side plate 21 of the negative pressure chamber 2.

[0094] The exhaust port 31 of the exhaust chamber 3 is located on the third back plate 33 of the exhaust chamber, which is opposite to the main air inlet 71 of the air inlet chamber 7 of the housing 1.

[0095] The exhaust vent 31 and the main air inlet 71 are set to face different directions. The main air inlet 71 is located on the long side of the housing 1, and the exhaust vent 31 is located on the short side of the housing 1.

[0096] The air intake direction of the fan 6 is orthogonal or nearly orthogonal to the main air outlet direction of the external heat exchanger 5, thus creating an airflow vortex between the air outlet of the external heat exchanger 5 and the air intake of the fan 6 in the negative pressure chamber 2.

[0097] In the exhaust chamber 3, the fan 6 is located at one end near its exhaust port 31; the air outlet of the fan 6 is directly opposite the exhaust port 31 of the exhaust chamber 3; the exhaust port 31 of the exhaust chamber 3 is a vertical strip exhaust port;

[0098] The fan 6 is a centrifugal fan; preferably, a backward centrifugal fan is adopted; the area of ​​the exhaust surface on the outer periphery of the fan impeller is 2 to 8 times the area of ​​the air inlet of the fan 6.

[0099] The air conditioning unit in this embodiment is equipped with three vertically arranged fans 6.

[0100] The external heat exchanger 5 is located in the air inlet cavity 7 of the shell 1;

[0101] The external heat exchanger 5 consists of heat exchange tubes 502 and metal fins 501 sleeved on the heat exchange tubes 502. The heat exchange tubes 502 are heat exchange pipelines that carry refrigerant transport and heat exchange, and are selected from copper tubes.

[0102] External heat exchanger 5 is an I-shaped finned tube heat exchanger.

[0103] The type I finned tube heat exchanger is installed in the air inlet cavity 7 of the shell 1, and forms a certain angle α with the main air inlet surface of the air inlet cavity 7 of the shell. The angle α is an acute angle. More preferably, the angle α is 15°-70°.

[0104] The fin spacing of the external heat exchanger 5 is <1mm.

[0105] The fan 6 includes an impeller support 601, an impeller 602, and an impeller rear cover 603. The impeller support 601 is connected to the impeller 602 through the impeller rear cover 603 and is installed at the air inlet of the exhaust chamber. The axial air inlet surface of the fan 6 overlaps with the air inlet of the exhaust chamber 3, and the radial air exhaust surface of the fan 6 is set in the exhaust chamber. The area of ​​the radial air exhaust surface of the fan 6 is larger than the area of ​​the axial air inlet surface.

[0106] The external heat exchanger 5 also includes an L-type finned tube heat exchanger, as well as M-type finned tube heat exchangers, N-type finned tube heat exchangers, and V-type finned tube heat exchangers, which are composed of I-type finned tube heat exchangers.

[0107] This embodiment adheres to the innovative concept of airflow coupling and energy coupling between the air conditioning unit and the external facade decoration structure of the equipment platform. While maintaining the technical characteristics of the external heat exchanger assembly fin planer step planing to reduce the airflow and implement deceleration air distribution, it is committed to reducing the structure and volume of the air inlet and outlet duct of the external heat exchanger 5 built into the air conditioning unit. By setting the air outlet direction of the air conditioning unit heat exchanger orthogonally (or nearly orthogonally) to the air intake direction of the fan, an airflow vortex chamber is constructed between the air outlet of the heat exchanger and the air intake of the fan.

[0108] In this embodiment, a backward centrifugal fan is used as the power source for the airflow of the external heat exchanger 5. Among all fan types, the backward centrifugal fan 6 has the highest energy efficiency; however, structurally, its impeller outer diameter φ1 is about 1.5 times its air intake diameter φ2, and during installation, an additional φ1×0.3 air outlet space needs to be reserved around the impeller. Therefore, the actual space occupied by the impeller outer circumference is about twice the diameter of its air intake, which becomes a key factor restricting the structure of the air conditioning unit.

[0109] In this embodiment, the air conditioning unit is orthogonally (or nearly orthogonally) positioned to the air outlet direction of the heat exchanger. Due to the structural and operational characteristics of the backward centrifugal fan, the cross-sectional area of ​​the heat exchanger outlet and the air inlet area of ​​the fan 6 are significantly larger than the area of ​​the backward centrifugal fan body's air inlet. This makes the space between the outlet of the external heat exchanger 5 and the air inlet of the backward centrifugal fan a buffer airflow vortex in the air path of the external heat exchanger 5, a structural and functional conversion zone in the air path, and a buffer chamber for deceleration, pressurization, adjustment, and reorganization of the airflow at the outlet of the external heat exchanger 5.

[0110] In this embodiment, the airflow structure uses the air inlet chamber 7 and the negative pressure chamber 2 of the external heat exchanger 5 connected in series, and then connected in series with the exhaust chamber 3 via the fan 6. The air inlet chamber 7, the negative pressure chamber 2, and the exhaust chamber 3 are arranged in sequence. In the exhaust chamber 3, the circumferential surface of the backward centrifugal fan impeller faces the exhaust port of the exhaust chamber 3. On the outside of the exhaust chamber 3 facing away from the exhaust port, the compressor chamber 4 is arranged.

[0111] In this embodiment, the compressor chamber 4 and the centrifugal fan chamber are arranged at the rear and side by side, which greatly reduces or even eliminates the longitudinal exhaust chamber 3 outside the fan 6, thereby greatly reducing the size, structure and volume of the air conditioning unit.

[0112] In this embodiment, the fins of the external heat exchanger 5 are densified, with a fin spacing of <1mm; preferably, the fin spacing is around 0.8mm; by reducing the fin spacing, the hydraulic equivalent diameter of the fin gap is reduced, the air-side convective heat transfer coefficient is improved, and the resistance of the finned tube to the heat exchange airflow, the throttling effect, and the ventilation uniformity of the finned tube heat exchanger ventilation surface are appropriately increased.

[0113] This embodiment eliminates the vertical exhaust cavity of the air conditioning unit in the prior art by setting up an airflow vortex chamber, adjusting the spatial relationship between the air inlet cavity 7, the negative pressure cavity 2 and the exhaust cavity 3, and adjusting the spatial relationship between the compressor cavity 4 and the exhaust cavity 3. This reduces the longitudinal depth of the air conditioning unit and further promotes the structural complementary design of the compressor cavity 4 and the exhaust cavity 3, making a structurally compact wall-mounted air conditioning unit possible.

[0114] The finned tube heat exchanger assembly referred to in this embodiment can be composed of 1 (I-shaped heat exchanger tube), 2 (V-shaped heat exchanger tube), 3 (N-shaped heat exchanger tube), and 4 (M-shaped heat exchanger tube) flat finned tubes. When in operation, it has the characteristic of "fin planer cutting the airflow in stages and distributing the air at low speed".

[0115] In this embodiment, "heat exchange tube" refers to a heat exchange pipeline that transports refrigerant, and can be one of the following: heat exchange tube, aluminum tube, iron tube, titanium tube, stainless steel tube, etc.

[0116] In this embodiment, when the air conditioning unit is running, in the air path of the external heat exchanger 5, the ambient air is drawn by the negative pressure of the fan 6 through the narrow air duct of the finned tube heat exchanger and the heat exchanger cavity, obtaining a speed and dynamic pressure head of about 4 m / s; the main airflow reaching the air outlet of the external heat exchanger 5 is inertially rushed towards the opposite airflow vortex chamber wall plate, blocked, decelerated and reflected by the opposite wall plate, and directly drives the air inlet of the fan 6; especially the inertial airflow between adjacent air inlets of the fan 6 in the vertical direction, between the air inlet of the high-level fan 6 and the top plate of the airflow vortex chamber (close to the main unit cover plate), and between the air inlet of the low-level fan 6 and the bottom plate of the airflow vortex chamber (close to the main unit chassis), after being blocked, decelerated and reflected by the opposite wall plate, flows to the air inlet area of ​​the fan 6 adjacent to the opposite wall plate, realizing the deceleration, pressurization, reorganization and redistribution of the heat exchange airflow in the airflow vortex chamber, improving the uniformity and stability of the airflow inflow into the air inlet of the fan 6;

[0117] In this embodiment, the effect of the backward centrifugal fan's air intake on the heat exchange airflow can be decomposed into two actions: two continuous actions without an interface, that is, two continuous composite actions.

[0118] ① The centrifugal fan's air inlet generates a gradient negative pressure from the inside out in the negative pressure chamber 2 and air inlet chamber 7 of the external heat exchanger 5, drawing ambient air into the heat exchanger to complete heat exchange. Afterward, the airflow from the heat exchanger inertially rushes into the opposing wall plate in the airflow vortex chamber, where it is blocked, slowed down, and reflected by the opposing wall plate, thus completing buffering, adjustment, and redistribution.

[0119] ② The airflow from the outlet of the external heat exchanger 5, which has completed buffering, adjustment, and redistribution in the airflow vortex chamber, is strongly pulled by the deep negative pressure at the centrifugal fan inlet. After being accelerated again, it rushes into the fan 6 inlet at high speed from the 360° outer periphery of the inlet. After being centrifugally pressurized by the centrifugal fan impeller, it is forced into the exhaust chamber 3. Finally, it is injected into the ambient atmosphere at a high speed of about 7m / s through the vertical strip exhaust port of the exhaust chamber 3 for diffusion and dilution.

[0120] In this embodiment, when the air conditioner's heat exchanger is running, air enters from one side of the finned tube and exits from the opposite side. The airflow lines entering the fin gaps intersect the plane where the fins are located at obtuse angles. The fins "obliquely cut" the airflow lines with a speed of about 4 m / s. Furthermore, a large number of fin planers on the finned tubes progressively plan the airflow lines. Each planed "shaving" airflow is then stuffed into a corresponding fin gap to implement "low-speed air distribution" of about 1.5 m / s in the fin gaps. When the airflow lines leave the fin gaps after heat exchange, they are once again "obliquely cut" by the long side of the fins, and after turning, they enter the centrifugal fan's air intake.

[0121] The total airflow resistance of the external heat exchanger 5 in this embodiment includes friction resistance and local resistance. Local resistance includes the resistance caused by the narrowing of the air inlet cross section, the resistance caused by the narrowing of the filter mesh, the resistance caused by the turning of the airflow direction in the gap between the inlet and outlet fins, the resistance caused by the deceleration and acceleration of the airflow in the gap between the inlet and outlet fins, and the resistance caused by the turning of the airflow in the airflow vortex chamber. In this embodiment, local resistance is the main body of the total airflow resistance.

[0122] Under the operating condition of unilateral airflow from the air inlet of fan 6, that is, when the airflow direction is orthogonal or nearly orthogonal to the air inlet direction of fan 6, the airflow resistance of the side of fan 6 away from the air inlet (the side closer to compressor cavity 4 in the figure) is usually higher than the resistance of the side adjacent to the air inlet (the side closer to heat exchanger outlet). In other words, the air pressure on the side of fan 6 away from the air inlet is lower than the pressure on the side adjacent to the air inlet. This will cause the operating fan 6 to be subjected to a counterclockwise couple and be in an unbalanced operating state, resulting in noise, vibration and asymmetrical wear of bearings.

[0123] This embodiment addresses the aforementioned problems by innovatively setting the position and size of the air inlet on the main housing, the angle of the airflow gap between the airflow in and out of the fins, and the spatial relationship between the air inlet of the housing 1, the finned tube heat exchanger, and the air intake of the fan 6. These measures adjust the local resistance of the airflow in various areas of the finned tube heat exchanger's outlet section, generating an outlet airflow of approximately 4 m / s that inertially impacts the target wall plate. This causes the airflow to decelerate, increase pressure, and reorganize within the airflow vortex chamber, thereby raising the pressure on the side of the fan 6 away from the air inlet to nearly equal the pressure on the side adjacent to the air inlet. This homogenizes the airflow pressure around the air intake of the fan 6, balancing the total resistance of the airflow across all areas of the airflow section. While achieving uniform ventilation and heat exchange in the finned tube heat exchanger, this also eliminates the aforementioned torque effect on the operating fan 6, allowing it to enter a balanced operating state. This eliminates the resulting noise, vibration, and asymmetric bearing wear.

[0124] In this embodiment, a backward centrifugal fan is used as the power source for the airflow of the external heat exchanger 5; the external heat exchanger 5 includes fins 501 and heat exchange tubes 502;

[0125] In this embodiment, at the airflow inlet section EE, a medium-speed airflow of approximately 4 m / s, flowing in from the outer facade of the equipment platform, propels in a uniform laminar flow to the fin gap inlet section FF. At FF, the incoming airflow line forms an obtuse angle with the fins behind the gap. The fins behind the gap act as "planers," "planing" a piece of airflow from the main incoming airflow and inserting it into the fin gap. At FF, the main incoming airflow, "planed" out by the tip of the "fin planer," impacts the fins behind the gap at an obtuse angle. The blade tip of the "planer" is planed off, and after being reflected by the fins on the front side of the gap, it diffuses and slows down in the fin gap. The airflow of about 1.5 m / s, which is decelerated by collision diffusion after being planed out by the "fin planer", is pulled by the negative pressure of the negative pressure chamber and overcomes the resistance of the fin gap channel to flow out of the fin channel. The low-speed airflow that reaches the fin gap outlet GG section is accelerated again by the negative pressure of the negative pressure chamber to a medium-speed airflow of about 4 m / s, and then converges at the HH section before being discharged into the negative pressure chamber 2. This microscopic process of the heat exchange airflow of the finned tube heat exchanger undergoing the stepwise planing of low-speed air distribution by the fin planer is an important part of the air inlet and outlet field and air inlet and outlet air path of the external heat exchanger assembly.

[0126] In this embodiment, the air conditioning unit is orthogonally positioned with the fan intake and the heat exchanger outlet, and the centrifugal fan drives the intake airflow per unit volume (1m³). 3 / s, equivalent to the operating airflow of a 4HP main unit's external heat exchanger, increased by 1 / 2 × m × (ν2) 2 -ν1 2The energy consumption is 8.3W. The total energy consumption of the incoming airflow per unit volume is approximately 2 × 8.3W = 16.6W (ventilation efficiency 0.5), which accounts for about 0.4% of the total power of the air conditioning unit. The local resistance caused by the one deceleration and two bends of the heat exchange airflow when passing through the finned tube heat exchanger increases the resistance of the fin gap and has a "throttling" effect, improving the uniformity of ventilation in the finned tube heat exchanger and increasing the heat transfer coefficient and heat transfer efficiency. This local resistance consumes the kinetic energy of the incoming airflow.

[0127] In this embodiment, the energy consumption of the air intake airflow of approximately 4 m / s is equivalent to the energy consumption of the exhaust airflow of a traditional side-discharge air conditioning unit. Therefore, compared to a traditional side-discharge air conditioning unit, the air conditioning unit in this embodiment has a net increase in high-speed exhaust airflow energy consumption of 7 m / s, which is equivalent to the energy consumption of the exhaust airflow per unit volume (1 m³ / s). 3 / s, equivalent to the operating airflow of a 4HP main unit) increased by 1 / 2×m×(v2) 2 -v1 2 =29.4w energy consumption. The total energy consumption of exhaust air per unit volume is about 2×29.4w, accounting for about 2% of the total power of the air conditioning unit (ventilation efficiency 0.5). In this embodiment, the air intake of the fan and the exhaust of the heat exchanger are orthogonally set, and the COP of the compact air conditioning unit is increased by more than 10%. Therefore, the energy efficiency brought about by the 2% increase in the total energy consumption of the unit caused by the high-speed exhaust of 7m / s reaches 10% / 2%=5, which is the part with the highest energy efficiency ratio in the total energy consumption of the unit.

[0128] Example 2

[0129] like Figure 11 As shown, this embodiment discloses an air conditioning unit, in which the air inlet cavity 7 of the housing 1 is also provided with an air supply strip 9; specifically, this embodiment is the same as embodiment 1, both of which implement the concept of air path coupling and energy coupling between the external heat exchanger 5 of the air conditioning unit and the external facade decoration mechanism of the equipment platform, adhere to the fin planer's stepped planing of the air inlet airflow and implement deceleration air distribution with a zigzag-shaped external heat exchanger technology with ultra-high specific volume heat exchange intensity, and are committed to reducing the structure and volume of the air conditioning unit. By setting the air outlet direction of the heat exchanger orthogonally to the air inlet direction of the air inlet of the air conditioning unit fan, an airflow vortex chamber is constructed between the air outlet of the heat exchanger and the air inlet of the fan 6, so that the airflow vortex chamber is transformed into a chamber for deceleration, buffering, pressurization, reflection and reorganization of the air outlet airflow of the external heat exchanger;

[0130] This embodiment eliminates the vertical exhaust cavity 3 and longitudinal exhaust cavity 3 of the air conditioning unit in the prior art by setting up an airflow vortex chamber and adjusting the spatial relationship between the air inlet cavity 7, the negative pressure cavity 2 and the exhaust cavity 3, thereby reducing the longitudinal depth of the air conditioning unit and constructing a compact wall-mounted air conditioning unit.

[0131] The difference in this embodiment is that an air supply strip 9 is provided on the side (short side of the outer casing) perpendicular to the front of the air conditioning unit where the main air inlet 71 is located, to supplement the air intake volume to the part of the finned tube that is far away from the fan air intake.

[0132] In this embodiment, an air supply strip 9 is provided on the side (short side of the outer casing) perpendicular to the front of the air conditioning unit where the main air inlet 71 is located. This improves the ventilation and heat exchange effect of the finned tubes away from the fan air intake, while also distributing the air intake volume on the front of the unit and reducing the front ventilation load pressure.

[0133] Example 3

[0134] like Figure 12-13 As shown, this embodiment discloses an air conditioning unit, in which multiple guide vanes 10 perpendicular to the front panel 14 are provided on the inner side of the main air inlet 71, to distribute air in segments to the external heat exchanger 5.

[0135] This embodiment shares the same technical principles and approaches as Embodiments 1-2. Both implement the concept of airflow coupling and energy coupling between the external heat exchanger 5 of the air conditioning unit and the exterior decoration mechanism of the equipment platform. It adheres to the technology of a zigzag external heat exchanger that uses a fin planer to plan the airflow in stages and implements deceleration air distribution. By orthogonally setting the air outlet direction of the heat exchanger to the air intake direction of the air conditioning unit fan, an airflow vortex is constructed between the air outlet of the heat exchanger and the air intake of the fan 6. This airflow vortex is transformed into a buffer, adjustment, and reorganization chamber for the airflow of the external heat exchanger.

[0136] This embodiment eliminates the vertical exhaust cavity 3 of the air conditioning unit in the prior art by setting up an airflow vortex chamber and adjusting the spatial relationship between the air inlet cavity 7, the negative pressure cavity 2 and the exhaust cavity 3, thereby reducing the longitudinal depth of the air conditioning unit and further reducing the thickness of the unit, thus constructing a compact wall-mounted air conditioning unit.

[0137] The difference between the air conditioning unit in this embodiment and that in embodiment 1 is that multiple guide vanes 10 perpendicular to the front panel 14 are arranged along the inner side of the front panel 14 where the main air inlet 71 is located to distribute air to the finned tube heat exchanger in sections, thus transforming the front panel 14 into a low-speed air inlet surface for the air conditioning unit.

[0138] In this embodiment, the vertical direction is perpendicular to the outer facade of the equipment platform, and the horizontal direction is parallel to the outer facade. During operation, the centrifugal fan operates, generating negative pressure at the air inlet of fan 6. This negative pressure pulls the air in front of the main unit's front panel into the main unit through the gaps between the horizontal guide vanes 10. After passing through the longitudinal gaps between the horizontal guide vanes 10, the airflow leaves the guide vanes 10 and turns towards the air inlet of fan 6, flowing towards the corresponding section on the finned tube heat exchanger. It is then steppedly planed by the fin planer blades of that section before entering the fin gaps to achieve deceleration and air distribution. After completing heat exchange between the fins, the airflow continues to be drawn by the negative pressure at the air inlet of fan 6, converging into the main airflow of the heat exchanger's outlet. This airflow rushes towards the opposing wall of the negative pressure chamber 2, where it is blocked, decelerated, pressurized, and reflected by the opposing wall. It then surges into the air inlet of fan 6, is pressurized by fan 6, and discharged into the exhaust chamber 3. Finally, it is injected at high speed into the outdoor atmospheric environment for diffusion and dilution.

[0139] This embodiment has all the advantages of Embodiment 1 / 2, and because multiple guide vanes 10 perpendicular to the front panel 14 are arranged along the inner side of the front panel of the air conditioning unit (i.e. the inner side of the front panel where the main air inlet 8 is set), the front panel 14 is transformed into a low-speed air intake surface of the air conditioning unit, and the short side air inlet of the unit facing away from the outer facade of the equipment platform is eliminated, making it suitable for equipment platforms with shallow depth.

[0140] Example 4

[0141] like Figure 14-15 As shown, this embodiment discloses an air conditioning unit in which the exhaust port 31 of the exhaust cavity 3 and the main air inlet 71 of the air inlet cavity 7 of the housing 1 are located on opposite sides. The opposite sides are configured such that the exhaust port 31 and the main air inlet 71 face the same direction, for example, both the exhaust port 31 and the main air inlet 71 are located on the short side of the housing.

[0142] The external heat exchanger 5 includes a V-shaped finned tube heat exchanger. The V-shaped finned tube heat exchanger is an asymmetrical V-shaped finned tube heat exchanger with unequal lengths on both sides, consisting of two I-shaped finned tube heat exchangers of different lengths.

[0143] Among them, the long heat exchange tube I-shaped finned tube heat exchanger is close to the outer side plate 15 of the shell 1; the short heat exchange tube I-shaped finned tube heat exchanger is close to the first side plate 32 of the exhaust cavity 3.

[0144] The air inlet cavity 7 of the shell 1 is also provided with an air supply strip 9; the air supply strip 9 is located on the outer side plate 15 of the shell 1 near the long heat exchange tube I-shaped finned tube heat exchanger.

[0145] The air intake and air guide panel of the fan 6 are wedged into the negative pressure chamber 2, and part of the space of the compressor chamber 4 is wedged into the negative pressure chamber 2.

[0146] This embodiment implements the concept of airflow coupling and energy coupling between the external heat exchanger 5 of the air conditioning unit and the external facade decoration mechanism of the equipment platform. It adheres to the technology of a zigzag external heat exchanger with ultra-high specific volume heat transfer intensity by using a fin planer to plan the airflow in stages and implement deceleration air distribution. It is committed to reducing the structure and volume of the air conditioning unit. By setting the air outlet direction of the heat exchanger orthogonally to the air inlet direction of the air inlet of the air conditioning unit fan 6, an airflow vortex is constructed between the air outlet of the heat exchanger and the air inlet of the fan 6. This airflow vortex is transformed into a chamber for deceleration, buffering, pressurization, reflection and reorganization of the airflow from the external heat exchanger.

[0147] This embodiment eliminates the vertical exhaust cavity 3 and longitudinal exhaust cavity 3 of the air conditioning unit in the prior art by setting up an airflow vortex chamber and adjusting the spatial relationship between the air inlet cavity 7, the negative pressure cavity 2 and the exhaust cavity 3, thereby reducing the longitudinal depth of the air conditioning unit and further reducing the lateral thickness of the unit, thus constructing a compact wall-mounted air conditioning unit.

[0148] The difference in this embodiment is that: an asymmetrical V-shaped finned tube external heat exchanger is adopted and the main air inlet 71 is orthogonally designed to the centrifugal fan air inlet. At the same time, the main airflow direction of the external heat exchanger outlet is kept perpendicular to the direction of the fan air inlet to construct an airflow vortex.

[0149] This embodiment has all the advantages of the air conditioning unit with the air outlet direction of the external heat exchanger 5 orthogonal to the air intake direction of the fan 6. Furthermore, due to the asymmetrical design of the heat exchange tube V-shaped finned tube heat exchanger and the rear-mounted and side-by-side arrangement of the compressor cavity 4 and the centrifugal fan cavity, the ventilation function of the two orthogonal surfaces on the front and side of the main unit is utilized. At the same time, the longitudinal exhaust cavity 3 outside the fan 6 is significantly reduced or even eliminated, thereby further promoting the compactness of the structure, greatly reducing the size, structure and volume of the air conditioning unit, and improving the load strength of the main unit.

[0150] Example 5

[0151] The air conditioning unit in this embodiment shares the same technical principles and routes as embodiments 1-4. Both adhere to the concept of air conditioning unit and equipment platform exterior decoration mechanism airflow coupling and energy coupling, insisting on the technology of internalizing and making explicit the air exchanger inlet and outlet ducts of the air conditioning unit, and implementing deceleration and air distribution technology by using a stepped planer to plan the airflow of the fins of the zigzag-shaped external heat exchanger assembly. This aims to reduce the structure and volume of the air exchanger 5's inlet and outlet ducts built into the air conditioning unit. By orthogonally setting the heat exchanger outlet direction to the fan intake direction, a structural airflow vortex chamber with deceleration, pressure boosting, buffering, and reorganization of the heat exchanger outlet airflow is constructed, thereby creating a new spatial relationship between the inlet cavity, negative pressure cavity, and exhaust cavity. Furthermore, a comprehensive asymmetric design is implemented for the unit's inlet cavity, negative pressure cavity 2 (airflow vortex chamber), and exhaust cavity 3, comprehensively reducing the length and thickness of the unit.

[0152] like Figure 16-19As shown, the difference between the air conditioner unit of this embodiment and that of embodiment 2 is that the exhaust port 31 of the exhaust cavity 3 is set on the second back plate 34 of the exhaust cavity opposite to the air inlet (i.e. the air intake of the fan 6) of the exhaust cavity 3, and is set as a small area horizontal strip exhaust port; preferably, the small area strip exhaust port is set at the bottom of the second back plate 34.

[0153] The small area indicates that the area of ​​the exhaust vent is 10% to 30% of the area of ​​the second back panel 34.

[0154] In another specific embodiment, a small-area exhaust vent is located in the upper middle part of the second back plate 34, and the small-area exhaust vent is a rectangular or diamond-shaped exhaust vent.

[0155] In another specific embodiment, a small-area exhaust vent is located in the horizontal middle of the second back plate 34, and the small-area exhaust vent is a vertical strip-shaped exhaust vent.

[0156] In this embodiment, the application scenario of the air conditioning unit is an equipment platform with a decorative structure on the exterior facade. The main decorative structure of the equipment platform's exterior facade has both shielding and transparency. It can be a metal column group, a louver, a decorative surface with a garden gate, a classical entrance door, or a landscape painting as the core, or a decorative surface with narrow strip decorative panels staggered front and back to leave a longitudinal gap between the panels as an air inlet, etc. The lower edge of the main decorative structure has a strip-shaped exhaust port such as a wire mesh structure, which is compatible with the low-position strip exhaust port of the air conditioning unit.

[0157] Example 6

[0158] like Figure 20-21 As shown, a device platform is provided with the air conditioning unit of Embodiments 1-4.

[0159] The equipment platform has a vertical strip exhaust vent 13 on at least one side of its exterior facade, and the exterior facade is also provided with a main decorative structure 14; the vertical strip exhaust vent 13 is a vertical strip exhaust vent pointing to one side of the exterior facade.

[0160] The vertical strip exhaust vent 13 includes a metal mesh and a metal column assembly;

[0161] The main decorative structure 14 of the equipment platform facade includes metal column groups, louvers, and / or ventilation structures with garden gates, classical entrance doors, and landscape painting designs, as well as ventilation structures with narrow strip decorative panels staggered front and back to leave longitudinal gaps between the panels.

[0162] Specifically, the air outlet bend 11 is set at the outlet of the exhaust cavity 3, so that the exhaust gas turns and is discharged. This is mainly to prevent the high-temperature exhaust airflow from flowing back to the side air inlet cavity 7; thereby preventing the outdoor unit of the air conditioner from sucking in already heated air, which would greatly reduce the heat exchange efficiency.

[0163] In another specific embodiment, an equipment platform is provided, which is equipped with the air conditioning unit of Embodiment 5. A small rectangular, rhomboid, or vertical strip-shaped exhaust vent is provided in the middle or lower middle part of the outer facade of the equipment platform, and a main decorative structure is also provided in the outer facade; the small rectangular, rhomboid, or vertical strip-shaped exhaust vent on the second back plate of the exhaust cavity faces the small rectangular, rhomboid, or vertical strip-shaped exhaust vent in the middle or lower middle part of the outer facade.

[0164] The small-area exhaust vents on the exterior facade include metal mesh, metal column groups, and / or openwork patterns; the main decorative structure includes metal column groups, louvers, and / or ventilation structures with garden gates, classical entrance doors, and landscape painting designs, as well as ventilation structures with narrow strip decorative panels staggered front and back to leave longitudinal gaps between the panels.

[0165] In another specific embodiment, a horizontal strip-shaped exhaust vent is provided at the bottom of the outer facade of the equipment platform, and a main decorative structure is also provided on the outer facade; the exhaust vent on the second back plate of the exhaust cavity faces the horizontal strip-shaped exhaust vent at the bottom of the outer facade.

[0166] The horizontal strip-shaped exhaust vents on the exterior facade include metal mesh and / or metal column assemblies;

[0167] The main decorative structure includes metal column groups, louvers and / or ventilation structures with garden gates, classical entrance doors, landscape painting designs, and ventilation structures with narrow strip decorative panels staggered front and back to leave longitudinal gaps between the panels.

[0168] In this embodiment, the air conditioning unit is installed on the equipment platform with its back to the outer facade of the equipment platform, so that the horizontal strip exhaust port on the back panel of the exhaust cavity is aligned with the strip exhaust port reserved below the main decorative structure of the outer facade.

[0169] In this embodiment, because the air conditioning unit and equipment platform facade adopt a horizontal strip exhaust vent, the symmetrical design of the vertical strip exhaust vent on both sides is not required in the scenario of vertical strip exhaust vent. The facade can be set as a single exhaust vent on the lower side, the exhaust vent occupies a smaller proportion of the facade, and the continuity of the main decorative structure of the facade is better. Furthermore, because the exhaust vent is set close to the upper edge of the equipment platform's sill, away from the main air intake area of ​​the facade, the risk of exhaust short circuit is greatly reduced.

[0170] The fundamental changes in the application scenarios of air conditioning units now call for disruptive innovations in the structure of the air conditioning unit itself and the spatial relationship between the air conditioning unit and the equipment platform:

[0171] First, driven by policies such as “building good houses” and “not including equipment platform area in the floor area ratio” from the housing and construction department, the accessibility of independent equipment platforms of multi-unit air conditioning units with multiple interconnection has been effectively implemented. Their potential to reduce noise radiation range and create a simple and elegant indoor and outdoor decoration will be fully explored, and they will replace single-unit room air conditioners and become the mainstream product in the air conditioning market.

[0172] Secondly, the traditional side-discharge multi-split air conditioning unit enters the equipment platform from the exterior wall of the building. The air inlet and outlet of the external heat exchanger 5 face unprecedentedly harsh spatial constraints of the equipment platform, which has a floor below, a ceiling above, a wall behind, and louvers in front. The side-discharge air conditioning unit faces the louvers, resulting in increased exhaust static pressure, reduced air volume, and some of the reduced air volume is short-circuited backflow, which seriously degrades the air conditioning performance.

[0173] Constructing a high-quality equipment platform requires innovation in the structure of the air conditioning unit itself, innovation in the exterior structure of the equipment platform, and innovation in the spatial relationship between the air conditioning unit and the exterior of the equipment platform.

[0174] The air conditioning unit platform in this embodiment is also equipped with a platform door 12; providing a convenient passage for the maintenance of the air conditioning unit, allowing maintenance personnel to quickly enter the equipment platform for inspection, repair and maintenance work.

[0175] The air conditioning unit platform in this embodiment is typically located on the north side of the building, preferably on the north side of the public restroom to reduce the occupation of the building's open space, and is connected to the north-side living balcony to fundamentally solve the accessibility problem of the equipment platform; the vertical strip exhaust vent of the air conditioning unit corresponds to the vertical strip metal mesh reserved on the exterior facade of the equipment platform; the exterior facade decoration structure of the equipment platform can be a narrow strip decorative panel with staggered front and rear to leave a longitudinal gap between the panels as an air inlet; it can also be a metal column group, a louver, a garden gate, a classical entrance door, a landscape painting, etc.; this embodiment adopts a louver decorative structure.

[0176] In this embodiment, during operation, the air inlet of the external heat exchanger 5 of the air conditioning unit draws in fresh air, creating a slight negative pressure state throughout the equipment platform. This draws in a large area of ​​ambient air at low speed through the air intake area on the louvers (ventilated facade) of the exterior wall into the interior space of the equipment platform. The interior space of the equipment platform merges with the air intake duct of the external heat exchanger 5. Meanwhile, the small area of ​​metal mesh on the side of the facade corresponding to the vertical strip air outlet area of ​​the air conditioning unit constitutes the exhaust area. The air intake and exhaust areas are separated, preventing the possibility of short-circuiting the exhaust air of the air conditioning unit. Furthermore, the exterior wall of the equipment platform serves as... Based on the baseline calculation, the area of ​​the metal mesh exhaust port of the air conditioning unit 5 on the exterior facade of this embodiment is very small, significantly smaller than the area of ​​the louvers on the exterior facade (less than 1 / 10) which serves as the air intake area. When the air intake airflow passes through the louvers in the louver area, the wind speed is extremely low and the resistance is very small. However, after the exhaust airflow passes through the metal mesh on the side of the louvers, it is injected into the ambient atmosphere at a small angle, resulting in high speed, long range, and good diffusion and dilution effect. The thermal performance of the air conditioning unit on the equipment platform of this embodiment has not decreased compared with the laboratory data, and the task of "heat transporter" is completed with high quality and high efficiency.

[0177] This embodiment eliminates the obstruction of the louvers to the exhaust air of the external heat exchanger 5 of the classic air conditioning unit, integrates the internal space of the equipment platform with the air inlet duct of the external heat exchanger 5, effectively connects the air path of the external heat exchanger 5, and ensures the thermal performance of the air conditioning unit. At the same time, it maintains the decorative appearance of the louver facade, and achieves a perfect unity between the decorative appearance of the equipment platform facade, the visual effect of the building facade and the excellent thermal performance of the air conditioning unit.

[0178] The advantages of using a vertical strip exhaust vent air conditioning unit platform in this embodiment are:

[0179] ① Construct an efficient airflow system for the external heat exchanger of the air conditioning unit, which traverses the exterior facade of the equipment platform.

[0180] The vertical strip exhaust vent design close to the side of the equipment platform in this embodiment significantly reduces the width of the exhaust vent and the area occupied by the decorative louvers commonly used on the facade. This maintains the functionality and aesthetics of the louvered building facade in preventing wind and rain from entering the equipment platform, while effectively improving the range and diffusion effect of the exhaust air from the external heat exchanger 5 of the air conditioning unit through the facade of the equipment platform into the ambient atmosphere. This embodiment eliminates the obstruction of the louvers to the exhaust air of the external heat exchanger 5 of the classic air conditioning unit, integrates the internal space of the equipment platform with the air inlet duct of the external heat exchanger 5, effectively connects the air path of the external heat exchanger 5, ensures the thermal performance of the air conditioning unit, and maintains the decorative appearance of the louvered facade. It achieves a perfect unity between the decorative appearance of the equipment platform facade, the visual effect of the building facade, and the excellent thermal performance of the air conditioning unit.

[0181] ②Increase the power density of the air conditioning unit and reduce the footprint of the equipment platform.

[0182] This embodiment uses a finned tube heat exchanger assembly with ultra-high specific volume heat transfer intensity. It also raises the height of the main unit and develops the idle space at the top of the equipment platform, effectively reducing the area occupied by ineffective and inefficient space and ventilation blind spots on the equipment platform. This increases the average cooling and heating power density of the air conditioning unit and significantly saves the equipment platform area occupied by the air conditioning unit under the same cooling and heating load.

[0183] ③ Air Conditioner Unit Inspection and Repair

[0184] The equipment platform used in this embodiment is connected to the north-facing living balcony, which solves the accessibility problem of the equipment platform;

[0185] In this embodiment, the air conditioning unit integrates the compressor, gas-liquid separator, four-way valve, expansion valve, electrical box, fan 6, and other refrigerant circuit components into the compressor chamber 4, which is parallel to the heat exchanger chamber. All refrigerant circuit and air circuit components of the air conditioning unit are housed in a detachable chamber with only one outer shell, which facilitates the inspection and maintenance of the air conditioning unit.

[0186] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An air conditioning unit, characterized in that, It includes a shell (1), a negative pressure chamber (2), an exhaust chamber (3), a compressor chamber (4), an external heat exchanger (5), and a fan (6); The compressor chamber (4) and the exhaust chamber (3) are arranged side by side on the outside of the same side plate of the negative pressure chamber (2); The air intake direction of the fan (6) is orthogonal or nearly orthogonal to the main air outlet direction of the external heat exchanger (5), thus constructing an airflow vortex chamber between the air outlet of the external heat exchanger (5) and the air intake of the fan (6) in the negative pressure chamber (2).

2. The air conditioning unit according to claim 1, characterized in that, The exhaust port of the exhaust chamber (3) is located on the third back plate of the exhaust chamber, which is opposite to and / or on the opposite side of the main air inlet (8) of the air inlet chamber (7) of the housing (1). The air outlet of the fan (6) in the exhaust cavity (3) is directly opposite the exhaust port of the exhaust cavity (3); the exhaust port of the exhaust cavity is a vertical strip exhaust port.

3. The air conditioning unit according to claim 1, characterized in that, The exhaust port of the exhaust chamber is located on the second back plate of the exhaust chamber opposite to the air inlet of the exhaust chamber, and a small area exhaust port is provided.

4. The air conditioning unit according to claim 3, characterized in that, The small-area exhaust vent is located at the bottom of the second back panel, and the small-area exhaust vent is a horizontal strip-shaped exhaust vent.

5. The air conditioning unit according to claim 3, characterized in that, The small-area exhaust vent is located in the upper middle part of the second back panel, and the small-area exhaust vent is rectangular or diamond-shaped.

6. The air conditioning unit according to claim 3, characterized in that, The small-area exhaust vent is located in the horizontal center of the second back panel, and the small-area exhaust vent is a vertical strip-shaped exhaust vent.

7. The air conditioning unit according to claim 1, characterized in that, The fan (6) is a centrifugal fan.

8. The air conditioning unit according to claim 7, characterized in that, The centrifugal fan is a backward centrifugal fan; the area of ​​the exhaust surface on the outer periphery of the fan impeller is 2 to 8 times the area of ​​the air inlet of the fan (6).

9. The air conditioning unit according to claim 1, characterized in that, The external heat exchanger (5) is disposed in the air inlet cavity of the shell (1); The external heat exchanger (5) consists of heat exchange tubes and metal fins sleeved on the heat exchange tubes; The heat exchange tube is a heat exchange pipeline that carries refrigerant transport and heat exchange, and is selected from any one of copper tube, aluminum tube, iron tube, titanium tube, stainless steel tube, and alloy tube; The structure of the external heat exchanger (5) includes a heat exchange tube I-type finned tube heat exchanger, a heat exchange tube L-type finned tube heat exchanger, and a heat exchange tube M-type finned tube heat exchanger, a heat exchange tube N-type finned tube heat exchanger, and a heat exchange tube V-type finned tube heat exchanger assembled from heat exchange tube I-type finned tube heat exchangers.

10. The air conditioning unit according to claim 9, characterized in that, The heat exchange tube type I finned tube heat exchanger is disposed in the air inlet cavity of the shell and forms a certain angle α with the main air inlet surface of the air inlet cavity of the shell; the included angle α is an acute angle.

11. The air conditioning unit according to claim 10, characterized in that, The included angle α is 15°-70°.

12. The air conditioning unit according to claim 9, characterized in that, The heat exchange tube V-shaped finned tube heat exchanger is an asymmetric heat exchange tube V-shaped finned tube heat exchanger with unequal lengths on both sides, consisting of two heat exchange tube I-shaped finned tube heat exchangers of different lengths. Among them, the long heat exchange tube I-shaped finned tube heat exchanger is close to the outer side plate of the shell (1); the short heat exchange tube I-shaped finned tube heat exchanger is close to the first side plate of the exhaust cavity (3).

13. The air conditioning unit according to claim 12, characterized in that, The air inlet cavity of the shell (1) is also provided with an air supply strip (9); the air supply strip (9) is provided on the outer side plate of the shell (1) near the long heat exchange tube I-shaped finned tube heat exchanger.

14. The air conditioning unit according to claim 1, characterized in that, The air inlet and air guide panel of the fan (6) are wedged into the negative pressure chamber (2), and part of the space of the compressor chamber (4) is wedged into the negative pressure chamber (2).

15. The air conditioning unit according to claim 2, characterized in that, The main air inlet (8) has multiple guide vanes (10) perpendicular to the front panel on the inner side, which are used to distribute air to the external heat exchanger (5) in sections.

16. A device platform, characterized in that, The equipment platform is equipped with an air conditioning unit as described in any one of claims 1-15.

17. The device platform according to claim 16, characterized in that, The equipment platform has a vertical strip exhaust vent on at least one side of its exterior facade, and the exterior facade also has a main decorative structure; the vertical strip exhaust vent on the third back plate of the exhaust cavity points to the vertical strip exhaust vent on one side of the exterior facade.

18. The device platform according to claim 17, characterized in that, The vertical strip exhaust vent of the equipment platform includes a metal mesh and / or a group of metal columns; The main decorative structure of the exterior facade of the equipment platform includes metal column groups, louvers, and / or ventilation structures with garden gates, classical entrance doors, and landscape painting designs, as well as ventilation structures with narrow strip decorative panels staggered front and back to leave longitudinal gaps between the panels.

19. The device platform according to claim 16, characterized in that, The equipment platform has small rectangular, rhomboid, or vertical strip-shaped exhaust vents in the middle or lower part of its exterior facade, and the exterior facade also has a main decorative structure; the small rectangular, rhomboid, or vertical strip-shaped exhaust vents on the second back plate of the exhaust cavity face the small rectangular, rhomboid, or vertical strip-shaped exhaust vents in the middle or lower part of the exterior facade.

20. The device platform according to claim 19, characterized in that, The small-area ventilation openings on the exterior facade include metal mesh, metal column groups, and / or hollowed-out structural patterns. The main decorative structure includes metal column groups, louvers and / or ventilation structures with garden gates, classical entrance doors, and landscape painting designs, as well as ventilation structures with narrow strip decorative panels staggered front and back to leave longitudinal gaps between the panels.

21. The device platform according to claim 16, characterized in that, The equipment platform has a horizontal strip-shaped exhaust vent at the bottom of its exterior facade, and the exterior facade also has a main decorative structure; the exhaust vent on the second back plate of the exhaust cavity faces the horizontal strip-shaped exhaust vent at the bottom of the exterior facade.

22. The device platform according to claim 21, characterized in that, The horizontal strip-shaped exhaust vents on the exterior facade are provided with metal mesh and / or metal column groups; The main decorative structure includes metal column groups, louvers and / or ventilation structures with garden gates, classical entrance doors, and landscape painting designs, as well as ventilation structures with narrow strip decorative panels staggered front and back to leave longitudinal gaps between the panels.

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